Add support for ARM (Raspberry PI) for nfs-client

- Reorganized to use Makefile for building
- Added arm container for use in ARM based kubernetes clusters

Signed-off-by: Niklas Wik <niklas.wik@iki.fi>
(cherry picked from commit 166056da73)

Makefile

@@ -0,0 +1,45 @@
+# Copyright 2016 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+ifeq ($(REGISTRY),)
+        REGISTRY = quay.io/external_storage/
+endif
+ifeq ($(VERSION),)
+        VERSION = latest
+endif
+IMAGE = $(REGISTRY)nfs-client-provisioner:$(VERSION)
+IMAGE_ARM = $(REGISTRY)nfs-client-provisioner-arm:$(VERSION) 
+MUTABLE_IMAGE = $(REGISTRY)nfs-client-provisioner:latest
+
+all: build image build_arm image_arm 
+
+container: build image build_arm image_arm
+
+build:
+	CGO_ENABLED=0 go build -o docker/x86_64/nfs-client-provisioner ./cmd/nfs-client-provisioner
+
+build_arm:
+	CGO_ENABLED=0 GOARCH=arm GOARM=7 go build -o docker/arm/nfs-client-provisioner ./cmd/nfs-client-provisioner 
+	
+image:
+	sudo docker build -t $(IMAGE) docker/x86_64
+
+image_arm:
+	sudo docker run --rm --privileged multiarch/qemu-user-static:register --reset
+	sudo docker build -t $(IMAGE_ARM) docker/arm
+
+push:
+	docker push $(IMAGE)
+	docker push $(MUTABLE_IMAGE)
+	docker push $(IMAGE_ARM)